Hugs Rooey, its agony isn't it?

Definitely get another appt with your GP if you're not noticing a difference on the ABs after a couple of days - most will kick in fairly quickly.

Kmns advice about hot & cold packs is great.

And if feeding was painful on that side before the mastitis hit and you've got damaged nipples its sounds like attachment might not be quite right. Have you got a Lactation Consultant near you who can sit down with you & have a look. I found that the best way to try and get attachment right.